Bump the maven-dependencies group with 6 updates

Bumps the maven-dependencies group with 6 updates:

| Package | From | To |
| --- | --- | --- |
| [org.jetbrains.kotlin:kotlin-stdlib-jdk8](https://github.com/JetBrains/kotlin) | `2.0.20` | `2.0.21` |
| [org.jetbrains.kotlin:kotlin-reflect](https://github.com/JetBrains/kotlin) | `2.0.20` | `2.0.21` |
| [org.jetbrains.kotlin:kotlin-test](https://github.com/JetBrains/kotlin) | `2.0.20` | `2.0.21` |
| org.jetbrains.kotlin:kotlin-maven-noarg | `2.0.20` | `2.0.21` |
| org.jetbrains.kotlin:kotlin-maven-allopen | `2.0.20` | `2.0.21` |
| org.jetbrains.kotlin:kotlin-maven-plugin | `2.0.20` | `2.0.21` |


Updates `org.jetbrains.kotlin:kotlin-stdlib-jdk8` from 2.0.20 to 2.0.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v2.0.21/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.0.20...v2.0.21)

Updates `org.jetbrains.kotlin:kotlin-reflect` from 2.0.20 to 2.0.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v2.0.21/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.0.20...v2.0.21)

Updates `org.jetbrains.kotlin:kotlin-test` from 2.0.20 to 2.0.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v2.0.21/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.0.20...v2.0.21)

Updates `org.jetbrains.kotlin:kotlin-maven-noarg` from 2.0.20 to 2.0.21

Updates `org.jetbrains.kotlin:kotlin-maven-allopen` from 2.0.20 to 2.0.21

Updates `org.jetbrains.kotlin:kotlin-maven-plugin` from 2.0.20 to 2.0.21

Updates `org.jetbrains.kotlin:kotlin-reflect` from 2.0.20 to 2.0.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v2.0.21/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.0.20...v2.0.21)

Updates `org.jetbrains.kotlin:kotlin-test` from 2.0.20 to 2.0.21
- [Release notes](https://github.com/JetBrains/kotlin/releases)
- [Changelog](https://github.com/JetBrains/kotlin/blob/v2.0.21/ChangeLog.md)
- [Commits](JetBrains/kotlin@v2.0.20...v2.0.21)

Updates `org.jetbrains.kotlin:kotlin-maven-noarg` from 2.0.20 to 2.0.21

Updates `org.jetbrains.kotlin:kotlin-maven-allopen` from 2.0.20 to 2.0.21

Updates `org.jetbrains.kotlin:kotlin-maven-plugin` from 2.0.20 to 2.0.21

---
updated-dependencies:
- dependency-name: org.jetbrains.kotlin:kotlin-stdlib-jdk8
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven-dependencies
- dependency-name: org.jetbrains.kotlin:kotlin-reflect
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven-dependencies
- dependency-name: org.jetbrains.kotlin:kotlin-test
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: maven-dependencies
- dependency-name: org.jetbrains.kotlin:kotlin-maven-noarg
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven-dependencies
- dependency-name: org.jetbrains.kotlin:kotlin-maven-allopen
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven-dependencies
- dependency-name: org.jetbrains.kotlin:kotlin-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven-dependencies
- dependency-name: org.jetbrains.kotlin:kotlin-reflect
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven-dependencies
- dependency-name: org.jetbrains.kotlin:kotlin-test
  dependency-type: direct:development
  update-type: version-update:semver-patch
  dependency-group: maven-dependencies
- dependency-name: org.jetbrains.kotlin:kotlin-maven-noarg
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven-dependencies
- dependency-name: org.jetbrains.kotlin:kotlin-maven-allopen
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven-dependencies
- dependency-name: org.jetbrains.kotlin:kotlin-maven-plugin
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: maven-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

pom.xml

@@ -37,7 +37,7 @@
     <properties>
         <java.version>11</java.version>
         <axon.version>4.10.2</axon.version>
-        <kotlin.version>2.0.20</kotlin.version>
+        <kotlin.version>2.0.21</kotlin.version>
         <dokka.version>1.9.20</dokka.version>
     </properties>